BroadSoft Completes Voice over LTE (VoLTE) IR.92 Compliance

GAITHERSBURG, MD, February 1, 2011 – BroadSoft, Inc. (Nasdaq: BSFT), the leading global provider of IP-based communications services to the telecommunications industry, today announced that its BroadWorks™ telephony application server (TAS) meets the requirements of the GSM Association’s (GSMA) IR.92 specifications for delivering Voice over LTE (VoLTE). The company believes this milestone will further advance BroadSoft’s position as the most widely utilized TAS in global IMS deployments.

The GSMA VoLTE initiative has defined the IP Multimedia Subsystem (IMS) as the common way to deliver voice and messaging services over mobile broadband all-IP networks. BroadWorks integrates with all major IMS core providers and is currently deployed in more than 50 IMS networks globally.

In September 2010, the GSMA published the IREG Permanent Reference Document IR.92, which outlines the specifications for migrating 2G & 3G mobile voice, video and messaging services to 4G mobile broadband networks, such as LTE.

About BroadSoft

BroadSoft provides software that enables fixed-line, mobile and cable service providers to deliver voice and multimedia services over their IP-based networks. The Company’s software, BroadWorks®, enables service providers to provide enterprises and consumers with a range of cloud-based, or hosted, IP multimedia communications, such as hosted IP private branch exchanges, video calling, unified communications, collaboration and converged mobile and fixed-line services.

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by their use of terms and phrases such as “believe,” “will,” “expect,” and other similar terms and phrases and include statements regarding BroadSoft’s belief that compliance with the requirements of the GSMA IR.92 specifications for delivering VoLTE will advance BroadSoft’s position as the most widely utilized TAS in global IMS deployments and its expectation that it will leverage its extensive experience with IMS networks and meeting the IR.92 specifications to offer mobile operators a seamless migration option for their voice and messaging services to their all IP network and the ability to further monetize their 4G broadband investments today by leveraging BroadSoft’s MobileMxD services to offer consumer and business IP-based communication applications beyond voice and messaging. The outcome of the events described in these forward-looking statements is subject to known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from the results anticipated by these forward-looking statements, including, but not limited to whether compliance with the requirements of the GSMA IR.92 specifications for delivering VoLTE will advance BroadSoft’s position as the most widely utilized TAS in global IMS deployments and whether it will be successful in leveraging its extensive experience with IMS networks and meeting the IR.92 specifications to offer mobile operators a seamless migration option for their voice and messaging services to their all IP network and the ability to further monetize their 4G broadband investments today by leveraging BroadSoft’s MobileMxD services to offer consumer and business IP-based communication applications beyond voice and messaging, as well as those factors contained in the “Risk Factors” section of BroadSoft’s final prospectus dated December 16, 2010, filed with the Securities and Exchange Commission pursuant to Rule 424(b) of the Securities Act of 1933, as amended, and in BroadSoft’s other filings with the SEC. All information in this press release is as of February 1, 2011. Except as required by law, BroadSoft undertakes no obligation to update publicly any forward-looking statement made herein for any reason to conform the statement to actual results or changes in its expectations.

BroadSoft and BroadWorks are registered trademarks of BroadSoft, Inc. All other names are trademarks of their respective owners.